usr/src/usr.bin/f77/src/f77/f77.c

char *xxxvers[] = "\n@(#) XF77 DRIVER, VERSION 0.04.1,   1983 MAY 12\n";
#include <stdio.h>
#include <ctype.h>
#include "defines.h"
#include "machdefs.h"
#include "drivedefs.h"
#include "version.h"
#include <signal.h>

static FILEP diagfile   = {stderr} ;
static int pid;
static int sigivalue    = 0;
static int sigqvalue    = 0;
static int sighvalue    = 0;
static int sigtvalue    = 0;

static char *pass1name  = PASS1NAME ;
static char *pass2name  = PASS2NAME ;
static char *pass2opt   = PASS2OPT ;
static char *asmname    = ASMNAME ;
static char *ldname     = LDNAME ;
static char *footname   = FOOTNAME;
static char *proffoot   = PROFFOOT;
static char *macroname  = "m4";
static char *shellname  = "/bin/sh";
static char *cppname    = "/lib/cpp";
static char *aoutname   = "a.out" ;
static char *temppref   = TEMPPREF;

static char *infname;
static char textfname[44];
static char asmfname[44];
static char asmpass2[44];
static char initfname[44];
static char sortfname[44];
static char prepfname[44];
static char objfdefault[44];
static char optzfname[44];
static char setfname[44];

static char fflags[50]  = "-";
static char cflags[50]  = "-c";
#if TARGET == GCOS
        static char eflags[30]  = "system=gcos ";
#else
        static char eflags[30]  = "system=unix ";
#endif
static char rflags[30]  = "";
static char lflag[3]    = "-x";
static char *fflagp     = fflags+1;
static char *cflagp     = cflags+2;
static char *eflagp     = eflags+12;
static char *rflagp     = rflags;
static char *cppflags   = "";
static char **cppargs;
static char **loadargs;
static char **loadp;

static flag erred       = NO;
static flag loadflag    = YES;
static flag saveasmflag = NO;
static flag profileflag = NO;
static flag optimflag   = NO;
static flag debugflag   = NO;
static flag verbose     = NO;
static flag nofloating  = NO;
static flag fortonly    = NO;
static flag macroflag   = NO;
static flag sdbflag     = NO;

static int ncpp;

\f
main(argc, argv)
int argc;
char **argv;
{
int i, c, status;
char *setdoto(), *lastchar(), *lastfield(), *copys(), *argvtos();
ptr ckalloc();
register char *s;
char fortfile[20], *t;
char buff[100];
int intrupt();

sigivalue = (int) signal(SIGINT, SIG_IGN) & 01;
sigqvalue = (int) signal(SIGQUIT,SIG_IGN) & 01;
sighvalue = (int) signal(SIGHUP, SIG_IGN) & 01;
sigtvalue = (int) signal(SIGTERM,SIG_IGN) & 01;
enbint(intrupt);

pid = getpid();
crfnames();

cppargs  = (char **) ckalloc( argc * sizeof(*cppargs) );
loadargs = (char **) ckalloc( (argc+20) * sizeof(*loadargs) );
loadargs[1] = "-X";
loadargs[2] = "-u";
#if HERE==PDP11 || HERE==VAX
        loadargs[3] = "_MAIN_";
#endif
#if HERE == INTERDATA
        loadargs[3] = "main";
#endif
loadp = loadargs + 4;

--argc;
++argv;

while(argc>0 && argv[0][0]=='-' && argv[0][1]!='\0')
        {
        for(s = argv[0]+1 ; *s ; ++s) switch(*s)
                {
                case 'T':  /* use special passes */
                        switch(*++s)
                                {
                                case '1':
                                        pass1name = s+1; goto endfor;
                                case '2':
                                        pass2name = s+1; goto endfor;
                                case 'p':
                                        pass2opt = s+1; goto endfor;
                                case 'a':
                                        asmname = s+1; goto endfor;
                                case 'l':
                                        ldname = s+1; goto endfor;
                                case 'F':
                                        footname = s+1; goto endfor;
                                case 'm':
                                        macroname = s+1; goto endfor;
                                case 't':
                                        temppref = s+1; goto endfor;
                                default:
                                        fatali("bad option -T%c", *s);
                                }
                        break;

                case '6':
                        if(s[1]=='6')
                                {
                                *fflagp++ = *s++;
                                goto copyfflag;
                                }
                        else    {
                                fprintf(diagfile, "invalid flag 6%c\n", s[1]);
                                done(1);
                                }

                case 'w':
                        if(s[1]=='6' && s[2]=='6')
                                {
                                *fflagp++ = *s++;
                                *fflagp++ = *s++;
                                }

                copyfflag:
                case 'u':
                case 'U':
                case '1':
                case 'C':
                        *fflagp++ = *s;
                        break;

                case 'O':
                        optimflag = YES;
#if TARGET == INTERDATA
                                *loadp++ = "-r";
                                *loadp++ = "-d";
#endif
                        *fflagp++ = 'O';
                        break;

                case 'N':
                        *fflagp++ = 'N';
                        if( oneof(*++s, "qxscn") )
                                *fflagp++ = *s++;
                        else    {
                                fprintf(diagfile, "invalid flag -N%c\n", *s);
                                done(1);
                                }
                        while( isdigit(*s) )
                                *fflagp++ = *s++;
                        *fflagp++ = 'X';
                        goto endfor;

                case 'm':
                        if(s[1] == '4')
                                ++s;
                        macroflag = YES;
                        break;

                case 'S':
                        strcat(cflags, " -S");
                        saveasmflag = YES;

                case 'c':
                        loadflag = NO;
                        break;

                case 'v':
                        verbose = YES;
                        fprintf(diagfile,"\nBerkeley F77, version %s\n",
                                VERSIONNUMBER);
                        break;

                case 'd':
                        debugflag = YES;
                        *fflagp++ = 'd';
                        s++;
                        while( isdigit(*s) || *s == ',' )
                                *fflagp++ = *s++;
                        *fflagp++ = 'X';
                        goto endfor;

                case 'M':
                        *loadp++ = "-M";
                        break;

                case 'g':
                        strcat(cflags," -g");
                        sdbflag = YES;
                        goto copyfflag;

                case 'p':
                        profileflag = YES;
                        strcat(cflags," -p");
                        *fflagp++ = 'p';
                        if(s[1] == 'g')
                                {
                                proffoot = GPRFFOOT;
                                s++;
                                }
                        break;

                case 'o':
                        if( ! strcmp(s, "onetrip") )
                                {
                                *fflagp++ = '1';
                                goto endfor;
                                }
                        aoutname = *++argv;
                        --argc;
                        break;

#if TARGET == PDP11
                case 'f':
                        nofloating = YES;
                        pass2name = NOFLPASS2;
                break;
#endif

                case 'F':
                        fortonly = YES;
                        loadflag = NO;
                        break;
                case 'D':
                case 'I':
                        cppargs[ncpp++] = *argv;
                        goto endfor;

                case 'i':
                        if(s[1]=='2' || s[1]=='4')
                                {
                                *fflagp++ = *s++;
                                goto copyfflag;
                                }
                        fprintf(diagfile, "invalid flag -i%c\n", s[1]);
                        done(1);

                case 'l':       /* letter ell--library */
                        s[-1] = '-';
                        *loadp++ = s-1;
                        goto endfor;

                case 'E':       /* EFL flag argument */
                        while( *eflagp++ = *++s)
                                ;
                        *eflagp++ = ' ';
                        goto endfor;
                case 'R':
                        while( *rflagp++ = *++s )
                                ;
                        *rflagp++ = ' ';
                        goto endfor;
                default:
                        lflag[1] = *s;
                        *loadp++ = copys(lflag);
                        break;
                }
endfor:
        --argc;
        ++argv;
        }

*fflagp = '\0';

if (ncpp > 0)
        cppflags = argvtos (ncpp,cppargs);

loadargs[0] = ldname;
#if TARGET == PDP11
        if(nofloating)
                *loadp++ = (profileflag ? NOFLPROF : NOFLFOOT);
        else
#endif
*loadp++ = (profileflag ? proffoot : footname);

for(i = 0 ; i<argc ; ++i)
        switch(c =  dotchar(infname = argv[i]) )
                {
                case 'r':       /* Ratfor file */
                case 'e':       /* EFL file */
                        if( unreadable(argv[i]) )
                                {
                                erred = YES;
                                break;
                                }
                        s = fortfile;
                        t = lastfield(argv[i]);
                        while( *s++ = *t++)
                                ;
                        s[-2] = 'f';

                        if(macroflag)
                                {
                                sprintf(buff, "%s %s >%s", macroname, infname, prepfname);
                                if( sys(buff) )
                                        {
                                        rmf(prepfname);
                                        erred = YES;
                                        break;
                                        }
                                infname = prepfname;
                                }

                        if(c == 'e')
                                sprintf(buff, "efl %s %s >%s", eflags, infname, fortfile);
                        else
                                sprintf(buff, "ratfor %s %s >%s", rflags, infname, fortfile);
                        status = sys(buff);
                        if(macroflag)
                                rmf(infname);
                        if(status)
                                {
                                erred = YES;
                                rmf(fortfile);
                                break;
                                }

                        if( ! fortonly )
                                {
                                infname = argv[i] = lastfield(argv[i]);
                                *lastchar(infname) = 'f';

                                if( dofort(argv[i]) )
                                        erred = YES;
                                else    {
                                        if( nodup(t = setdoto(argv[i])) )
                                                *loadp++ = t;
                                        rmf(fortfile);
                                        }
                                }
                        break;

                case 'F':       /* C preprocessor -> Fortran file */
                        if( unreadable(argv[i]) )
                                {
                                erred = YES;
                                break;
                                }
                        s = fortfile;
                        t = lastfield(argv[i]);
                        while( *s++ = *t++)
                                ;
                        s[-2] = 'f';
                        sprintf(buff,"%s %s %s >%s", cppname, cppflags, infname, fortfile);
                        status = sys(buff);
                        if(status)
                                {
                                erred = YES;
                                rmf(fortfile);
                                break;
                                }

                        if( ! fortonly )
                                {
                                infname = argv[i] = lastfield(argv[i]);
                                *lastchar(infname) = 'f';

                                if ( dofort(argv[i]) )
                                        erred = YES;
                                else    {
                                        if (nodup(t = setdoto(argv[i])) )
                                                *loadp++ = t;
                                                rmf(fortfile);
                                                }
                                }
                        break;

                case 'f':       /* Fortran file */
                        if( unreadable(argv[i]) )
                                erred = YES;
                        else if( dofort(argv[i]) )
                                erred = YES;
                        else if( nodup(t=setdoto(argv[i])) )
                                *loadp++ = t;
                        break;

                case 'c':       /* C file */
                case 's':       /* Assembler file */
                        if( unreadable(argv[i]) )
                                {
                                erred = YES;
                                break;
                                }
#if HERE==PDP11 || HERE==VAX
                        fprintf(diagfile, "%s:\n", argv[i]);
#endif
                        sprintf(buff, "cc %s %s", cflags, argv[i] );
                        if( sys(buff) )
                                erred = YES;
                        else
                                if( nodup(t = setdoto(argv[i])) )
                                        *loadp++ = t;
                        break;

                case 'o':
                        if( nodup(argv[i]) )
                                *loadp++ = argv[i];
                        break;

                default:
                        if( ! strcmp(argv[i], "-o") )
                                aoutname = argv[++i];
                        else
                                *loadp++ = argv[i];
                        break;
                }

if(loadflag && !erred)
        doload(loadargs, loadp);
done(erred);
}


/*
 * argvtos() copies a list of arguments contained in an array of character
 * strings to a single dynamically allocated string. Each argument is
 * separated by one blank space. Returns a pointer to the string or null
 * if out of memory.
 */
#define SBUFINCR        1024
#define SBUFMAX         10240

char *
argvtos(argc, argv)
        char **argv;
        int  argc;
{
        register char *s;               /* string pointer */
        register int  i;                /* string buffer pointer */
        char *malloc();                 /* memory allocator */
        char *realloc();                /* increase size of storage */
        char *sbuf;                     /* string buffer */
        int nbytes;                     /* bytes of memory required */
        int nu;                         /* no. of SBUFINCR units required */
        int sbufsize;                   /* current size of sbuf */
        int strlen();                   /* string length */

        sbufsize = SBUFINCR;
        if ((sbuf = malloc((unsigned)sbufsize)) == NULL)
                {
                fatal("out of memory (argvtos)");
                /* NOTREACHED */
                }

        for (i = 0; argc-- > 0; ++argv)
                {
                if ((nbytes = (i+strlen(*argv)+1-sbufsize)) > 0)
                        {
                        nu = (nbytes+SBUFINCR-1)/SBUFINCR;
                        sbufsize += nu * SBUFINCR;
                        if (sbufsize > SBUFMAX)
                                {
                                fatal("argument length exceeded (argvtos)");
                                /* NOTREACHED */
                                }
                        if ((sbuf = realloc(sbuf, (unsigned)sbufsize)) == NULL)
                                {
                                fatal("out of memory (argvtos)");
                                /* NOTREACHED */
                                }
                        }
                for (s = *argv; *s != '\0'; i++, s++)
                        sbuf[i] = *s;
                sbuf[i++] = ' ';
                }
        sbuf[--i] = '\0';
        return(sbuf);
}
\f
dofort(s)
char *s;
{
int retcode;
char buff[200];

infname = s;
sprintf(buff, "%s %s %s %s %s %s",
        pass1name, fflags, s, asmfname, initfname, textfname);
switch( sys(buff) )
        {
        case 1:
                goto error;
        case 0:
                break;
        default:
                goto comperror;
        }

if( dopass2() )
        goto comperror;
doasm(s);
retcode = 0;

ret:
        rmf(asmfname);
        rmf(initfname);
        rmf(textfname);
        return(retcode);

error:
        fprintf(diagfile, "\nError.  No assembly.\n");
        retcode = 1;
        goto ret;

comperror:
        fprintf(diagfile, "\ncompiler error.\n");
        retcode = 2;
        goto ret;
}


dopass2()
{
char buff[100];

if(verbose)
        fprintf(diagfile, "PASS2.");

#if FAMILY==DMR
        sprintf(buff, "%s %s - %s", pass2name, textfname, asmpass2);
        return( sys(buff) );
#endif


#if FAMILY == PCC
#       if TARGET==INTERDATA
        sprintf(buff, "%s -A%s <%s >%s", pass2name, setfname, textfname, asmpass2);
#       else
        sprintf(buff, "%s %s >%s", pass2name, textfname, asmpass2);
#       endif
        return( sys(buff) );
#endif
}


doasm(s)
char *s;
{
register char *lastc;
char *obj;
char buff[200];
char *lastchar(), *setdoto();

if(*s == '\0')
        s = objfdefault;
lastc = lastchar(s);
obj = setdoto(s);

#if TARGET==PDP11 || TARGET==VAX
#       ifdef PASS2OPT
        if(optimflag)
                {
                sprintf(buff, "%s %s %s", pass2opt, asmpass2, optzfname);
                if( sys(buff) )
                        rmf(optzfname);
                else
                        {
                        sprintf(buff,"mv %s %s", optzfname, asmpass2);
                        sys(buff);
                        }
                }
#       endif
#endif

if(saveasmflag)
        {
        *lastc = 's';
#if TARGET == INTERDATA
        sprintf(buff, "cat %s %s %s %s >%s",asmfname, initfname,
                setfname, asmpass2, obj);
#else
#if TARGET == VAX
        sprintf(buff, "cat %s %s %s >%s", asmfname, asmpass2, initfname, obj);
#else
        sprintf(buff, "cat %s %s %s >%s", asmfname, initfname, asmpass2, obj);
#endif
#endif
        sys(buff);
        *lastc = 'o';
        }
else
        {
        if(verbose)
                fprintf(diagfile, "  ASM.");
#if TARGET == INTERDATA
        sprintf(buff, "%s -o %s %s %s %s %s", asmname, obj, asmfname,
                initfname, setfname, asmpass2);
#endif

#if TARGET == VAX
        /* vax assembler currently accepts only one input file */
        sprintf(buff, "cat %s %s >>%s", asmpass2, initfname, asmfname);
        sys(buff);
#ifdef UCBVAXASM
        sprintf(buff, "%s -J -o %s %s", asmname, obj, asmfname);
#else
        sprintf(buff, "%s -o %s %s", asmname, obj, asmfname);
#endif
#endif

#if TARGET == PDP11
        sprintf(buff, "%s -u -o %s %s %s", asmname, obj, asmfname, asmpass2);
#endif

#if TARGET!=INTERDATA && TARGET!=PDP11 && TARGET!=VAX
        sprintf(buff, "%s -o %s %s %s", asmname, obj, asmfname, asmpass2);
#endif

        if( sys(buff) )
                fatal("assembler error");
        if(verbose)
                fprintf(diagfile, "\n");
#if HERE==PDP11 && TARGET!=PDP11
        rmf(obj);
#endif
        }

rmf(asmpass2);
}


doload(v0, v)
register char *v0[], *v[];
{
char **p;
int waitpid;

if(sdbflag)
        *v++ = "-lg";
if (profileflag)
        {
        for(p = p_liblist ; *p ; *v++ = *p++)
                ;
        }
else    {
        for(p = liblist ; *p ; *v++ = *p++)
                ;
        }

*v++ = "-o";
*v++ = aoutname;
*v = NULL;

if(verbose)
        fprintf(diagfile, "LOAD.");
if(debugflag)
        {
        for(p = v0 ; p<v ; ++p)
                fprintf(diagfile, "%s ", *p);
        fprintf(diagfile, "\n");
        }

#if HERE==PDP11 || HERE==INTERDATA || HERE==VAX
        if( (waitpid = fork()) == 0)
                {
                enbint(SIG_DFL);
                execv(ldname, v0);
                fatalstr("couldn't load %s", ldname);
                }
        await(waitpid);
#endif

#if HERE==INTERDATA
        if(optimflag)
                {
                char buff1[100], buff2[100];
                sprintf(buff1, "nopt %s -o junk.%d", aoutname, pid);
                sprintf(buff2, "mv junk.%d %s", pid, aoutname);
                if( sys(buff1) || sys(buff2) )
                        err("bad optimization");
                }
#endif

if(verbose)
        fprintf(diagfile, "\n");
}
\f
/* Process control and Shell-simulating routines */

sys(str)
char *str;
{
register char *s, *t;
char *argv[100], path[100];
char *inname, *outname;
int append;
int waitpid;
int argc;


if(debugflag)
        fprintf(diagfile, "%s\n", str);
inname  = NULL;
outname = NULL;
argv[0] = shellname;
argc = 1;

t = str;
while( isspace(*t) )
        ++t;
while(*t)
        {
        if(*t == '<')
                inname = t+1;
        else if(*t == '>')
                {
                if(t[1] == '>')
                        {
                        append = YES;
                        outname = t+2;
                        }
                else    {
                        append = NO;
                        outname = t+1;
                        }
                }
        else
                argv[argc++] = t;
        while( !isspace(*t) && *t!='\0' )
                ++t;
        if(*t)
                {
                *t++ = '\0';
                while( isspace(*t) )
                        ++t;
                }
        }

if(argc == 1)   /* no command */
        return(-1);
argv[argc] = 0;

s = path;
t = "/usr/bin/";
while(*t)
        *s++ = *t++;
for(t = argv[1] ; *s++ = *t++ ; )
        ;
if((waitpid = fork()) == 0)
        {
        if(inname)
                freopen(inname, "r", stdin);
        if(outname)
                freopen(outname, (append ? "a" : "w"), stdout);
        enbint(SIG_DFL);

        texec(path+9, argv);  /* command */
        texec(path+4, argv);  /*  /bin/command */
        texec(path  , argv);  /* /usr/bin/command */

        fatalstr("Cannot load %s",path+9);
        }

return( await(waitpid) );
}


#include "errno.h"

/* modified version from the Shell */
texec(f, av)
char *f;
char **av;
{
extern int errno;

execv(f, av+1);

if (errno==ENOEXEC)
        {
        av[1] = f;
        execv(shellname, av);
        fatal("No shell!");
        }
if (errno==ENOMEM)
        fatalstr("%s: too large", f);
}


done(k)
int k;
{
static int recurs       = NO;

if(recurs == NO)
        {
        recurs = YES;
        rmfiles();
        }
exit(k);
}


enbint(k)
int (*k)();
{
if(sigivalue == 0)
        signal(SIGINT,k);
if(sigqvalue == 0)
        signal(SIGQUIT,k);
if(sighvalue == 0)
        signal(SIGHUP,k);
if(sigtvalue == 0)
        signal(SIGTERM,k);
}


intrupt()
{
done(2);
}


await(waitpid)
int waitpid;
{
int w, status;

enbint(SIG_IGN);
while ( (w = wait(&status)) != waitpid)
        if(w == -1)
                fatal("bad wait code");
enbint(intrupt);
if(status & 0377)
        {
        if(status != SIGINT)
                fprintf(diagfile, "Termination code %d\n", status);
        done(3);
        }
return(status>>8);
}
\f
/* File Name and File Manipulation Routines */

unreadable(s)
register char *s;
{
register FILE *fp;

if(fp = fopen(s, "r"))
        {
        fclose(fp);
        return(NO);
        }

else
        {
        fprintf(diagfile, "Error: Cannot read file %s\n", s);
        return(YES);
        }
}


clf(p)
FILEP *p;
{
if(p!=NULL && *p!=NULL && *p!=stdout)
        {
        if(ferror(*p))
                fatal("writing error");
        fclose(*p);
        }
*p = NULL;
}

rmfiles()
{
rmf(textfname);
rmf(asmfname);
rmf(initfname);
rmf(asmpass2);
#if TARGET == INTERDATA
        rmf(setfname);
#endif
}


/* return -1 if file does not exist, 0 if it is of zero length
   and 1 if of positive length
*/
content(filename)
char *filename;
{
#ifdef VERSION6
        struct stat
                {
                char cjunk[9];
                char size0;
                int size1;
                int ijunk[12];
                } buf;
#else
#       include <sys/types.h>
#       include <sys/stat.h>
        struct stat buf;
#endif

if(stat(filename,&buf) < 0)
        return(-1);
#ifdef VERSION6
        return(buf.size0 || buf.size1);
#else
        return( buf.st_size > 0 );
#endif
}


crfnames()
{
fname(textfname, "x");
fname(asmfname, "s");
fname(asmpass2, "a");
fname(initfname, "d");
fname(sortfname, "S");
fname(objfdefault, "o");
fname(prepfname, "p");
fname(optzfname, "z");
fname(setfname, "A");
}


rmf(fn)
register char *fn;
{
/* if(!debugflag && fn!=NULL && *fn!='\0') */

if(fn!=NULL && *fn!='\0')
        unlink(fn);
}


LOCAL fname(name, suff)
char *name, *suff;
{
sprintf(name, "/tmp/%s%d.%s", temppref, pid, suff);
}


dotchar(s)
register char *s;
{
for( ; *s ; ++s)
        if(s[0]=='.' && s[1]!='\0' && s[2]=='\0')
                return( s[1] );
return(NO);
}


char *lastfield(s)
register char *s;
{
register char *t;
for(t = s; *s ; ++s)
        if(*s == '/')
                t = s+1;
return(t);
}


char *lastchar(s)
register char *s;
{
while(*s)
        ++s;
return(s-1);
}

char *setdoto(s)
register char *s;
{
*lastchar(s) = 'o';
return( lastfield(s) );
}


badfile(s)
char *s;
{
fatalstr("cannot open intermediate file %s", s);
}


ptr ckalloc(n)
int n;
{
ptr p, calloc();

if( p = calloc(1, (unsigned) n) )
        return(p);

fatal("out of memory");
/* NOTREACHED */
}


char *copyn(n, s)
register int n;
register char *s;
{
register char *p, *q;

p = q = (char *) ckalloc(n);
while(n-- > 0)
        *q++ = *s++;
return(p);
}


char *copys(s)
char *s;
{
return( copyn( strlen(s)+1 , s) );
}


oneof(c,s)
register c;
register char *s;
{
while( *s )
        if(*s++ == c)
                return(YES);
return(NO);
}


nodup(s)
char *s;
{
register char **p;

for(p = loadargs ; p < loadp ; ++p)
        if( !strcmp(*p, s) )
                return(NO);

return(YES);
}


static fatal(t)
char *t;
{
fprintf(diagfile, "Compiler error in file %s: %s\n", infname, t);
if(debugflag)
        abort();
done(1);
exit(1);
}


static fatali(t,d)
char *t;
int d;
{
char buff[100];
sprintf(buff, t, d);
fatal(buff);
}


static fatalstr(t, s)
char *t, *s;
{
char buff[100];
sprintf(buff, t, s);
fatal(buff);
}
err(s)
char *s;
{
fprintf(diagfile, "Error in file %s: %s\n", infname, s);
}